Can I generate multiple Bitcoin addresses/QR Codes using one offline wallet?

I am new to Bitcoin so please explain this to me simply please. I want to know if there is an offline Bitcoin wallet I can use to receive Bitcoin, but then while I'm offline I could just generate another address/QR Code using the same exact wallet.
Update: For example, I download an offline Bitcoin wallet on my phone, then turn WiFi off. I then go on my laptop and donate some Bitcoin to that address. I go back on my phone, and I want to generate a new Bitcoin QR/address code without losing any of my Bitcoin. Is this possible?
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